Plant duster



Oct. 4, 1938. v. H. JOCKISCH 2,131,954

PLANT DUS TER Filed Feb. 4, 1937 f EH oel i sch Guam;

Patented Oct. 4, 1938 omen-Sims PATENT oFjFIcE- 1 PLANT DUSTER I Velmer Harrison Jo ckisch, Greensboro, v

Application February 4, 1931, Serial No. 124,117

.. v ,3Claims.

This invention relates to devices for dusting plants withpo'isonous powder for the purpose of killing insects on the plants or preventing the infestation of the plants by insects.

The general object of the invention is to provide a duster of this character which is extremely simple, which has been found to be thoroughly effective in actual practice, and which is so constructed that it may be used either by shaking the container towards and from the plants and preventing the clogging of the perforations in the container by manipulating a perforated plate or be used by rotating or oscillating the perforated plate which is disposed in the bottom of the container, thereby causing the poisonous powder to slit in fine particles out through the plate.

Another object is to so construct the container and the means for discharging the powder that the powder will not clog in the container.

My invention is illustrated in the accompanying drawing wherein:

Figure 1 is an elevation of a plant duster constructed in accordance with my invention.

Figure 2 is a top plan view thereof.

Figure 3 is a vertical section enlarged, the middle portion of the container being cut away.

Referring to the drawing, I0 designates the container which is cylindrical in form and is of uniform diameter from end to end. The bottom II of the container is formed with a plurality of fine perforations. Extending through this bottom II is a shaft l2 having a crank handle I3 at its upper end. The lower end of the shaft [2 carries upon it the perforated plate M which has perforations adapted to register with the perforations of the plate or bottom H as the shaft l2 is turned by means of the crank handle. The upper end of the shaft I2 is supported in a bearing 15 which extends between diametrically opposite portions of the container, the upper end of the container being cut down on each side of the point of engagement between the member l5 and the wall of the container, as at [6. The lower end of the shaft carries a washer l1 and lock nuts [8. By this construction the shaft may be readily released from engagement with the container and withdrawn. A handle I9 is attached to one wall of the container adjacent its upper end.

In order to reduce the area of the perforated portion of the bottom I I through which the powder may be discharged, I provide an annular shield 20 angular in cross-section so as to provide an upwardly extending portion or portions 2|. This shield is held in place by means of a band 22 surrounding'thelower end of the container, the band being split and having outwardly projecting lugs 23 through which a bolt 24 passes. By releasing this bolt, the band may be released and the shield may be removed, if desired Obviously a number of shields having different widths may be provided sothat the effective area of the perforated portion of the bottom may be regulated entirely in accordance with the plant being dusted and none of the poisonous dust being wasted.

Preferably, I attach to the wall of the container- In at its upper end a contractile spring 25, one end of which is engaged with the crank 1 handle l3.

This duster may be used in any one of three ways. It may be shaken up or down to discharge the powder through the perforations, assuming that the perforations in the plate or disk I4 register with the perforations in the bottom II. If the perforations should become clogged, it is only necessary to give a slight rotation or oscillation to the shaft l2, which will eliminate any clogging.

Another way of using this device is to oscillate the shaft l2 by forcing the handle IS in a direction to tension the spring 25, then releasing the handle, whereupon the spring 25 will draw the shaft back to its initial position. This oscillation of the handle may be readily accomplished by means of one hand while the other hand of the operator engages the handle l9.

A third way of using the device is to carry'it by means of the handle IS in one hand and then rotate the shaft l2 by means of the crank handle l3. This full rotation or partial rotation of the disk l4 loosens up the poison dust at the bottom of the can and permits it to be readily discharged.

In ordinary operations, especially for small plants, I have found it best to discharge the dust by an up and down shaking movement and if the poison dust seems to be slow in flowing, to give the crank l3 a turn by the hand.

Attention is particularly called to the fact that the container ID has a uniform diameter from top to bottom. Any container which tapers toward the bottom acts to cause the dust to clog at the bottom and prevents the ready discharge of the dust.

It is also pointed out that as the crank I3 is turned or oscillated, the holes in the perforated disk 14 become filled with poison dust and this is released through the perforations in the plate H, and thus the dust is applied directly to the plant without waste.

a handle whereby it may be rotated, a shield, angular in cross-section and having a portion extending upward around the lower end of the, container wall, an annular portion extending around the margin of the perforated bottom,. a

split band extending around the upwardly extending portion of said shield, and a bolt passing through the split portion ofi'thebandiand adapted to hold it clamped upon the lower end of the,

container.

2. A plant duster, including a cylindrical container having a substantially uniform. diameter. throughout its length andhaving a rigidperfo rated bottom, a shaft extending longitudinally through the container and through the bottom,

a perforated disk carried by the lower end of the shaft and disposed closely adjacent the bottom, means at the upper end of the container affording a bearing for said shaft and the shaft having a handle whereby it may be operated, a removable shield having an annular portion formed and constructed to extend beneath the outer margin of the perforated bottom over the marginal perforations thereof, and means for detachably holding :the shield. in place upon the container. r g

3. A plant duster, including a cylindrical container having a uniform diameter throughout its length and having a perforated bottom, a shaft extending longitudinally through the container and through. the bottom,a perforated disk carried by the l'ower'end of the shaft and disposed adjacent the inner'face of the bottom, and having perforations registering with the perforations of thebottom, and a bearing member extending across the upper end of-the-containerand/through which: the.- shaft passes, the shaft having a handle.-

whereby it may be rotated..

VELMER' HARRISON- J OGKISGH; 

